Panicum trachyrhachis

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Family Poaceae

Taxonomy: Panicum trachyrhachis Benth.

Synonyms: 6 (APC 2026-07-30)

Panicum brachyrachys Hack. (orthographic variant)
Panicum robustum B.K.Simon (taxonomic synonym)
Panicum trachirhachis K.Schum. & Lauterb. (orthographic variant)
Panicum trachyrhachis Benth. f. trachyrhachis (taxonomic synonym)
Panicum trachyrhachis Benth. var. trachyrhachis (taxonomic synonym)
Panicum trachyrrhachis F.M.Bailey (orthographic variant)

Distribution (APC): WA, NT, Qld

Profiles: APC, Flora of Australia, ALA, iNaturalist, NT eFlora, Florabase, ATRP

Traits

Top source datasets: Crowley_2007 (2), GrassBase_2014 (6), Kew_2019_1 (1), Kew_2019_6 (2), Metcalfe_2020_2 (33), NHNSW_2014 (1), NTH_2022 (3), NTH_2023 (8), Nano_2011 (2), Osborne_2014 (2), Simpson_2021 (1), Sjostrom_2006 (4), WAH_2022_2 (4), WAH_2023_2 (3), Wenk_2022 (2), Wenk_2023 (1). See below for a full list of sources.
Summary: AusTraits contains 30 traits from 75 records in 16 datasets.

Traits by category (click to expand). For categorical traits, the values are listed. For numerical traits, the mean and range are shown.

fire response

resprouting_capacity (categorical): fire_killed (2) [sources: Crowley_2007; Nano_2011]

flower morphology

sex_type (categorical): andromonoecious (1); hermaphrodite (2) [sources: Metcalfe_2020_2; Sjostrom_2006]

fruit morphology

fruit_length (numerical): 2 mm (2-2 mm) [sources: Metcalfe_2020_2]
fruit_type (categorical): caryopsis (5) [sources: Metcalfe_2020_2; NTH_2023; Sjostrom_2006; WAH_2023_2]
fruit_fleshiness (categorical): dry (3) [sources: Metcalfe_2020_2; Sjostrom_2006]
fruit_dehiscence (categorical): dehiscent (2); indehiscent (3) [sources: Metcalfe_2020_2; Sjostrom_2006]

leaf morphology

leaf_area (numerical): 933.75 mm2 (855-1012.5 mm2) [sources: Metcalfe_2020_2]
leaf_length (numerical): 265 mm (100-450 mm) [sources: GrassBase_2014; Metcalfe_2020_2; NTH_2023]
leaf_width (numerical): 5.83 mm (3-10 mm) [sources: GrassBase_2014; Metcalfe_2020_2; NTH_2023]
leaf_shape (categorical): linear (1) [sources: NTH_2023]
leaf_compoundness (categorical): simple (2) [sources: Metcalfe_2020_2]
leaf_lamina_posture (categorical): flat (1); involute (1) [sources: NTH_2023]
plant_photosynthetic_organ (categorical): leaf (1) [sources: NTH_2023]

life history

photosynthetic_pathway (categorical): c4 (1) [sources: Osborne_2014]
plant_growth_form (categorical): graminoid (2); herb (2); tussock (3) [sources: Metcalfe_2020_2; NTH_2022; WAH_2022_2; Wenk_2022]
life_form (categorical): therophyte (2) [sources: Metcalfe_2020_2]
life_history (categorical): annual (4) [sources: NTH_2022; Simpson_2021; WAH_2022_2; Wenk_2023]
plant_growth_substrate (categorical): aquatic (1); semiaquatic (1) [sources: WAH_2022_2]
woodiness_detailed (categorical): herbaceous (3) [sources: NTH_2022; WAH_2022_2; Wenk_2022]
root_structure (categorical): non_mycorrhizal (2) [sources: Metcalfe_2020_2]
pollination_syndrome (categorical): wind (2) [sources: Metcalfe_2020_2]
dispersal_syndrome (categorical): anemochory (2) [sources: Metcalfe_2020_2]
flowering_time (categorical): yyyyyyyyyyyy (1) [sources: NHNSW_2014]
vegetative_reproduction_ability (categorical): not_vegetative (2) [sources: Metcalfe_2020_2]
bud_bank_location (categorical): none (2) [sources: Crowley_2007; Nano_2011]

nutrient and stable isotope

leaf_delta13C (numerical): -13.3 {delta}[ppth] (-13.3--13.3 {delta}[ppth]) [sources: Osborne_2014]

seed morphology

seed_dry_mass (numerical): 1.03 mg (1.03-1.03 mg) [sources: Kew_2019_1]

whole plant morphology

plant_height (numerical): 1.4 m (0.3-2.5 m) [sources: GrassBase_2014; Metcalfe_2020_2; WAH_2023_2]

Sources

dataset_id	n_traits	n_records	reference
Metcalfe_2020_2	17	33	D. Metcalfe. “Unpublished data: Traits of Poaceae spp, CSIRO”. 2020.
NTH_2023	6	8	D. of Land Resource Management and N. T. of Australia. Northern Territory Flora Online. accessed on 6 May, 2022.. 2022. url: http://eflora.nt.gov.au/.
GrassBase_2014	3	6	W. Clayton, M. Vorontsova, and K. H. &. H. Williamson. GrassBase - The online world grass flora. 2006. url: http://www.kew.org/data/grasses-db.html.
Sjostrom_2006	4	4	A. Sjöström and C. L. Gross. “Life-history characters and phylogeny are correlated with extinction risk in the Australian angiosperms”. Journal of Biogeography 33.2 (2006), pp. 271-290. doi: 10.1111/j.1365-2699.2005.01393.x.
WAH_2022_2	4	4	Western Australian Herbarium. Florabase—the Western Australian Flora.. accessed on 14 September, 2022.. 2022. url: https://florabase.dpaw.wa.gov.au/.
NTH_2022	3	3	D. of Land Resource Management and N. T. of Australia. Northern Territory Flora Online. accessed on 6 May, 2022.. 2022. url: http://eflora.nt.gov.au/.
WAH_2023_2	2	3	Western Australian Herbarium. Florabase—the Western Australian Flora.. accessed on 14 September, 2022.. 2023. url: https://florabase.dpaw.wa.gov.au/.
Crowley_2007	2	2	G. Crowley, M. Gardener, and M. Marrinan. Tropical savannas fire response database. 2007. url: [www.landmanager.org.au](www.landmanager.org.au).
Kew_2019_6	1	2	Royal Botanic Gardens Kew. Germination data from the Seed Information Database (SID) and Seed Bank Database. 2019. url: http://data.kew.org/sid/.
Nano_2011	2	2	C. E. M. Nano and P. J. Clarke. “How do drought and fire influence the patterns of resprouting in Australian deserts?”. Plant Ecology 212 (2011), pp. 2095-2110. doi: 10.1007/s11258-011-9988-x.
Osborne_2014	2	2	C. Osborne, A. Salomaa, T. Kluyver, V. Visser, E. Kellogg, O. Morrone, M. Vorontsova, W. Clayton, and D. Simpson. “A global database of C4 photosynthesis in grasses”. New Phytologist 204 (2014), pp. 441-446. doi: 10.1111/nph.12942.
Wenk_2022	2	2	E. Wenk. “Unpublished data: Australian plant growth forms dataset”. 2022.
Kew_2019_1	1	1	Royal Botanic Gardens Kew. Seed Information Database (SID) and Seed Bank Database. 2019. url: http://data.kew.org/sid/.
NHNSW_2014	1	1	Royal Botanic Gardens Sydney. PLantNET. 2014. url: http://plantnet.rbgsyd.nsw.gov.au/search/simple.htm.
Simpson_2021	1	1	K. J. Simpson, E. C. Jardine, S. Archibald, E. J. Forrestel, C. E. R. Lehmann, G. H. Thomas, and C. P. Osborne. “Resprouting grasses are associated with less frequent fire than seeders”. New Phytologist 230 (2021), pp. 832-844. doi: 10.1111/nph.17069.
Wenk_2023	1	1	E. Wenk. “Unpublished data: Australian plant life history dataset, University of New South Wales, Sydney”. 2023.